swiftness to their burrows, which are generally in the midst of a dense 

 clump of bushes, or under rocks. Wheu once in their holes, so tena- 

 ciously do they hold on with their stout claws that the strength of a 

 single person is not sufficient to drag them out. Their bleached remains 

 scattered about over the island attest that they fall easy victims to the 

 birds of prey. 



Excretse, supposed to be of this Lizard, deposited in the National 

 ]\Iuseum at Washington, and collected from the high lands of Utah 

 and New Mexico by Dr. Yarrow, of Wheeler's Geographical and Geolog- 

 ical Survey, bear no resemblance to what was seen common around the 

 mouths of their burrows on Angel Island. In the first place, the ex- 

 crement was not deposited in masses, but was scattered about. The 

 scybaliie were oblong, and seemingly composed of the shells of seeds and 

 other indigestible matter of plants. Thej^ were dry and porous, and so 

 loosely held together that they could be readily pulverized under the 

 foot. 



UTA STANSBURIANA, Baird & Girard [Nos. 8570, 85G9]. 



Uia stansiurmna, Baird & Girard, Proc. Acad. Nat. Sci. Pbila., 1852, C9 ; Stausbury's 

 Rep. Exped. Great Salt Lake, 345, pi. 5, f. 4-5. — Baird, U. S. & Mex. Bound. 

 Surv., ii, pt. ii, 1859, Reptiles, 7 ; P. R. R. Rep., x, 1859, Whipple's Route, Rep- 

 tiles, 37. — Cope, Check-list, 1875, 48.— Yarrow, Wheeler's Geogr. and Geolo. 

 Expl. and Surv. West of the 100th Merid., v, 1875, Zoiil., 5G8. — Coues, op. 

 cit., V, 1875, Zool., 596. 



Locality : Cerros Island, off the Pacific coast of the peninsula of 

 Lower California, and also from the mainland. The color of the male 

 is brown above, with whitish -yellow irregular dots. The double row of 

 dorsal patches of a deeper black, which is sometimes observed in this 

 species, is more or less confluent into four longitudinal lines in our speci- 

 men. The female is uniformly pale olive above. Both sexes are yel- 

 lowish below, greenish along the sides, and bluish under the throat 

 There is also present in both sexes a deep indigo spot on the sides, just 

 posterior to the axilla. 



CRmOTIDM. 



CHIEOTES CANALICULATUS, Cuv'er [No. 8568J. 



Le Canelle, Lac6p., Hist. Quad. Ovip., i, 613, pi. 41. 



Le Birtmne canelle, Cuv., Regue Anira., (Ire 6dit.) ii,57 ; (2re 6dit.) ii, 67. 

 Bipes canaliculatus, Bonnat., Encyclop. Erp., 68, pi. 12, f. 6. — ^Latr., Hist. Nat. Rept. 

 ii, 90. 



